Flex-OneNAND driver support
This patch adds support for Flex-OneNAND devices.
Signed-off-by: Rohit Hagargundgi <h.rohit@samsung.com>
Signed-off-by: Amul Kumar Saha <amul.saha@samsung.com>
diff --git a/include/linux/mtd/onenand.h b/include/linux/mtd/onenand.h
index 9a6f317..68e174e 100644
--- a/include/linux/mtd/onenand.h
+++ b/include/linux/mtd/onenand.h
@@ -20,8 +20,9 @@
#include <linux/mtd/compat.h>
#include <linux/mtd/bbm.h>
+#define MAX_DIES 2
#define MAX_BUFFERRAM 2
-#define MAX_ONENAND_PAGESIZE (2048 + 64)
+#define MAX_ONENAND_PAGESIZE (4096 + 128)
/* Scan and identify a OneNAND device */
extern int onenand_scan (struct mtd_info *mtd, int max_chips);
@@ -39,9 +40,14 @@
/**
* struct onenand_chip - OneNAND Private Flash Chip Data
* @param base [BOARDSPECIFIC] address to access OneNAND
+ * @dies: [INTERN][FLEXONENAND] number of dies on chip
+ * @boundary: [INTERN][FLEXONENAND] Boundary of the dies
+ * @diesize: [INTERN][FLEXONENAND] Size of the dies
* @param chipsize [INTERN] the size of one chip for multichip arrays
* @param device_id [INTERN] device ID
* @param verstion_id [INTERN] version ID
+ * @technology [INTERN] describes the internal NAND array technology such as SLC or MLC.
+ * @density_mask: [INTERN] chip density, used for DDP devices
* @param options [BOARDSPECIFIC] various chip options. They can partly be set to inform onenand_scan about
* @param erase_shift [INTERN] number of address bits in a block
* @param page_shift [INTERN] number of address bits in a page
@@ -64,9 +70,13 @@
*/
struct onenand_chip {
void __iomem *base;
+ unsigned int dies;
+ unsigned int boundary[MAX_DIES];
+ unsigned int diesize[MAX_DIES];
unsigned int chipsize;
unsigned int device_id;
unsigned int version_id;
+ unsigned int technology;
unsigned int density_mask;
unsigned int options;
@@ -124,6 +134,8 @@
#define ONENAND_SET_BUFFERRAM0(this) (this->bufferram_index = 0)
#define ONENAND_SET_BUFFERRAM1(this) (this->bufferram_index = 1)
+#define FLEXONENAND(this) (this->device_id & DEVICE_IS_FLEXONENAND)
+#define ONENAND_IS_MLC(this) (this->technology & ONENAND_TECHNOLOGY_IS_MLC)
#define ONENAND_IS_DDP(this) \
(this->device_id & ONENAND_DEVICE_IS_DDP)
@@ -157,4 +169,6 @@
int onenand_bbt_read_oob(struct mtd_info *mtd, loff_t from,
struct mtd_oob_ops *ops);
+unsigned int onenand_block(struct onenand_chip *this, loff_t addr);
+int flexonenand_region(struct mtd_info *mtd, loff_t addr);
#endif /* __LINUX_MTD_ONENAND_H */